Slowly, like I was afraid I might explode, I stripped down to nothing. The twins looked me up and down and smiled. Amy eyed me too, with something more like hunger. She tried to hold her head up and watch what I was doing. The position did not look comfortable. My older sister's body was already in the perfect position, but she seemed to be trying to spread her legs even wider. Seeing Amy strapped to the bed might have messed with my mind, but my dick was good to go. Primed. I hefted myself in my hand and stepped forward.

"Wait!" Amy said.

I stopped. We all did. Had...